Volvo B27A - Page 35

Group 21 Reconditioning engine
Cleaning, checking
W
5092-3
Demolin
5092-5
Mil hie
5128
Pistons 1, 2 and 3
Connecting rods
marked A, C and E
or 1, 3 and 5
Marked 1-2-3
5092-2
C23
Press out gudgeon (piston) pin
Assemble support tool. Use piston support 5092-5 for
Demolin pistons and 5128 for Mahle pistons.
Note that support 5092-2 must be turned different ways
for different pistons.
Position piston with connecting rod and cap, but with-
out bearing shells, in support. Arrow on top of piston
must point up.
Press out gudgeon pin. Use drift 5092-3.
Pistons 4, 5 and 6
Connecting rods marked B, D and F
or 2, 4 and 6
Marked 4-5-6
5092-2
C24
Check connecting rods
Use an alignment gauge.
Check out-of-true, twist, S-form.
Check bolt threads and replace if necessary, see
C10-11.
C25
Heat connecting rods
Install caps on connecting rods but not bearing shells.
There should be approx. 1 mm (0.04") clearance be-
tween connecting rod and cap.
Place small end on heater and heat to approx. 250°C
(480°F).
33